How to deal with nosy friend?

i am new to this so this may be a long story...i made good friends with my neighbour over the past 10 months (call her Faye) in an apt building where me and my husband are the superintendents. She is over constantly every day and when i don't have her in she becomes juvenile and sulks...She has three young children under 3 yrs old....I DO NOT drink but have slipped now and then drinking with her in the past at her apt approx 4 times this yr...WELL here it comes...i made a huge mistake and went out with another acquaintance / friend (ill call her Debbie) one nite...and got sloshed...my husband was upset very upset...i stayed out till early morning....Faye hates Debbie and sends me messages on FB like she hates me and cant believe i did this etc etc...i had to remover her from my fb as a friend because of other juvenile messages she puts on MY WALL for my family and husbands family to see....how embarrassing and i believe she was drunk when she did it....anyways to the point...she send my husband and i a message indicating that we were fake and couldn't believe i went out with debbie and blah blah blah....and then sent my husband a message indicating that i drank with her in the past and smoked some weed and blah blah blah...hoping she would get a rise outta my hubby and get us fighting...it did not work.LMAO..we love each other very much and ya i made a mistake but all has been resolved...i cant believe i have a neighbour who is soooo nosy and thinks she can tear my husband and i apart...we discussed everything and all is fine now....we had a couple days with no company and that meant no coffee for faye and visits for a few days..so im sure shes upset Also, .she has no partner...he left her and i think she has become wayyyyy wayyy to attached to me...we are nice ppl and we even helped her get a computer $900 so she might keep busy...u know something to do...she promised to pay back 150 a month but we have yet to see it she only made two payements of $100...but she seems to have money for booze and drugs.i sent her a message AGAINNNNN and told her i will not tolerate or i am not required to report everything i do to her good or bad...those decisions are mine and mine alone and for me and my husband to work through..which we have....i honestly feel like she is very immature.. and trying to cause fights..in her message to my hubby was to kick me out ahahhaa..her last sentence in the message was " i am mad at you i hate you" lol....like we are 12 yrs old or something. Gawd, i am realizing that i may be dealing with a 38 yr old woman with a 12yr old mind...i also put in the message that i DONT CARE what she does...i care about her but what she does partying is NONNNNNNEEEE of my business so stay out of mine...help me out her guys i really think i might be dealing with a clutcher person...she need to know i am her friend but there are things she needs to stay out of. help pls Pulling my hair out