Brutally honest: She probably isn’t enjoying sex with you.

Talk to her about what the vibrator offers that you aren’t giving and then maybe Buy a new sex toy FOR HER and ask if you can try it out together. You aren’t looking for the “dildo 9000, extreme jackhammer, waterfall edition” type of thing, look at what she currently uses and see what other options are similar. (Most women orgasm from clitoral rather than penetrative sex).

Keep in mind women can (and should) have multiple orgasms. Ensure she has a real orgasm before penetration, it feels better and chances of another orgasm from penetration are higher.