Jo Potter’s side are looking to keep hold of the Sky Sports trophy they won at the same venue last season when they face the Jags.
The Dutch international star has been on the winning and losing side in a final for the Gers and hopes a victory can be the first of several trophy successes this campaign.
Speaking exclusively to RangersTV, she said: “When you get to play in a final, especially at Tynecastle it is exciting.
“Some of the team played there last year in the final and we have good memories of that. Hopefully we can do that again this year.
“These chances don’t come around too often in your career or that easily.
“Rachel Rowe was saying the other day that she had never played in a final before, so even though she is an experienced international, it is her first final.
“It doesn’t matter if you are young or old, it is exciting to play for silverware.
“All the trophies I have won here are special, including winning the league, but winning a cup final is extra special.
‘We lost the last final we played in, but we won the Sky Sports Cup and we want to retain it.
“In life sometimes you win and sometimes you lose and this time we are hoping to be on the winning side again.
“It means a lot to win trophies, it is hard to get to the final and it would mean a lot to me to win and hopefully it sets the tone for the rest of the season and we want to make everyone connected with the club proud.
“We have earned our spot in the final and hopefully we can do the job and start the hunt for trophies as we mean to go on.”
The 31-year-old is well aware of the vital role she could play in tomorrow’s clash alongside the likes of captain Nicola Docherty and striker Jane Ross.
The trio will be asked to help guide and support some of the younger members of the squad, like 17-year-old starlet Mia McAulay and fellow youngster Jodi McLeary through the match.
Middag believes if she stays calm then it can rub off on her teammates.
She added: “I think if you are talking about experience you have to try to bring a calmness to the team.
“As Jo says, calmness can spread but so can panic. If people see me giving the ball away it might bring some panic.
“I need to try to keep the ball and to use my experience to bring some calmness to the field.”
You can secure your seat for the final here, kick-off 1:30pm, with tickets priced from £8 for adults and just £1 for concessions!