anxious dog

my dog has always been incredibly anxious. she’s 4 years old (i got her when she was 40 days old – a little too soon, i’m aware. she was adopted) and she’s always been SUPER high energy. we have a reaaaaally big yard and she runs around all day with my other dog however something i noticed is that she ALWAYS has her ears pinned back, which i know is a sign of stress. her ears only go up when she’s trying to hear something or is very very focused.

when i pet her, her ears go back! and i’ve tried to stop petting her and give her space, but she will literally hit me and get me to keep going.

i also noticed she licks her lips A LOT!! and it doesn’t seem to be linked to stress? whenever i talk to her (it can be loudly or quietly like my tone doesn’t matter) she licks her lips. she’s been seen by her vet a million times and all they say is that she’s too anxious. she’s an incredibly loving and nice dog and all my friends love her

another thing she does is sometimes she’s a little mean to my other dog 😭 she tends to be incredibly jealous, doesn’t really let people pet him if they’re not petting her and she’s overly dominant with him (resource guards things from him only for example).

i’ve given her toys (that she destroys in ten minutes), more stimulation, and nothing really does seem to help. she’s her calmest when we’re in bed lying together, she’ll spend HOURS sleeping in my bed if i let her but i’m not always home. she’ll also literally pee and shit in my stepdad/moms bed just for funsies i think?

i was wondering if anyone has like any tips? is she just an incredibly anxious dog????? does she secretly hate me w the ear thing like what do i do ? is her anxiety perhaps linked with her being a lil jealous? 😭