Seeking a Halal Marriage but Facing Secrecy

Assalamu alaikum, I've been talking to a sister who says she wants to marry me, but she's not willing to involve her parents the right way. Whenever I bring it up, she tells me she feels pressured and uncomfortable. I really need some advice on how to handle this. I'm too embarrassed to talk to anyone I trust, even my family, because things are slowly getting out of control and I'm afraid we're heading towards haram actions. I was asking her more often about meeting her parents and doing the nikah a few weeks back, but she stopped talking to me for almost a week, saying she wasn't ready and felt pressured. Now we're back in touch and seeing each other in person. I have no intention of falling into zina. I try to have good Islamic knowledge and taqwa. I think I'm just scared of losing her because finding a spouse in the West these days is really tough. Is it unreasonable to think I'm being manipulated with empty promises and feelings, maybe for some temporary satisfaction she might be after? I'm past the point of wanting anything temporary. I want something solid and halal that lasts, and I want all the barakah Allah has for me. Please share your guidance, Jazakum Allah khair.