I know I could have gone to the ediquette board but I like you guys better 
Question about whether or not I should feel obligated to give a +1........
Background: I have a friend from high school that was on the "maybe" list but eventually made it to the invited list... I don't see her much and she just moved several hours away (and in with her boyfriend) so I don't really keep up with her on again off again relationship that she's had for the past 4 years or so. I sent her a STD with her name and boyfriend's name (last minute change from just her name). Saw another hs friend a few weeks ago who indicated that they're no longer together and she's "moving out soon". So........ I'm wondering if I need to give her a + 1.. but I hate that she'll be given the option to bring someone completely random to my wedding and she almost hadn't been invited in the first place... (and I have to cross other people off that I do know for random people?? I know this is something a lot have to work with)
One of the things that's making this difficult is that I am inviting four other hs friends (one of which is her best friend, so it's not like she won't know anyone) BUT all four of them are in serious relationships.... aka she'd be the only one without a date.
Thanks in advance for your opinions!