My wife has said the same thing about pain/discomfort. You can try a few things to help her take it:
-Get a smaller dildo.
-Get a 'jelly' type dildo.
-Try warming it up with warm water beforehand
-Get a vibrator (use it for clit stimulation initially, then on insertion the vibration can be used increase bloodflow/create a distraction from mild pain.
-use lube.
-use ...... (alcohol is an obvious choice, but I've found poppers work wonders as well. MDMA also is VERY useful if you're up for it).
After a few attempts on the same toy, it will get easier and more enjoyable for her to use. But the attempts need to be wholehearted and fairly close together to achieve any significant result, so she may need a fair amount of encouragement/prompting/reassurance from you along the way.
The rewards for both of you will be worth it. Personally, I love the way I can feel through my hand on the toy how the vagina walls resist early on. I can only imagine how amazing it must feel for a guy with a big cock to stretch out a tight fresh pussy like that.🤤
