From relationships perspective - don’t do it over chat. You can begin chatting more at first and at some point invite her to go out only the two of you. She would take the hint that it’s a date and will either agree or it will take some more time to get to know each other until she accepts or makes it more clear that she’s not interested in you. From stuttering point of view - you just have to say it. If you go out you could have some time of other kind of talk until you bring the topic, so this might ease it up a bit. But once you bring it it’s likely that the pressure will lead to blocks. So at this point for me it would be important to know exactly what you want to convey in your message. The exact words don’t matter. At all. Even body language is more important. So just prepare what you want to say - e.g. you like here. You want to know if she does as well. Then there are a million different ways for you to say it. Just be yourself. Practice some until you feel confident that you know what you want to say and you have a few different ways that you could say it.