I have the feeling my neighbour is having an identity crisis

I'm rather close with my neighbours and i pretty much know most of their names. I know my one of my neighbours as Jenny. She went along with that name until somewhere around last year I was in my garden having a chat and I referred her as "Jenny" since she introduced herself like that nd would even have her husband say that but then she stared at me and said "Who's Jenny?? I'm Eliza!" so I was like confused but I went along with it and then today I was at my front door unlocking it to get it and then I see her with her husband doing something with one of their bushes out infront and i said "Hi, Paul! Oh, I nearly missed you there Eliza!" and she gave me the same familiar stare she gave me last year and said 

"Eliza...? Oh? Love, do you know an Eliza? (Love as in her husband). Darling, who's Eliza because the only people I see is you and my husband! I doubt you're not Eliza!" 

and i said "You said you were Eliza...?" 

" Whaaaaaat? (subt;e side glance to her husband) I'm Bridget, silly!"

I don't know what sort of crisis she's going through but I can't help but feel a tad bit worried. I mean, yeah, you can do whatever the fuck with your name, but I'm so confused.  I swear on lord I am not anywhere near crazy what is going on. I wonder if she's deciding on like adding them together into Jelizaget or something