

Q1: What does an "instead" effect mean, exactly?
The processing shown after "instead" in the effect replaces the standard processing. For example, if an effect reads "Delete your opponent's Digimon with 6000 DP or less. If you have a Digimon with Greymon in its name, instead delete 1 of your opponent's Digimon with the lowest DP," and you have a Digimon with Greymon in its name, you delete 1 of your opponent's Digimon with the lowest DP instead of deleting 1 of their Digimon with 6000 DP or less.
Q2: Two copies of this card are in the battle area. When playing a Boss or TS trait Digimon card, can I activate the Your Turn effects on both copies of this card to reduce the play cost by a total of 2? Additionally, if I don't have a Digimon, can I reduce the play cost by a total of 4?
Yes, both are possible.
Hiroko Sagisaka BT26-088 R TS [Start of Your Main Phase] If your opponent has a Digimon, gain 1 memory. [Your Turn] When any [Boss] or [TS] trait Digimon cards would be played, by suspending this Tamer, reduce the cost by 1. If you have no Digimon, instead reduce the cost by 2. --- [Security] Play this card without paying the cost.
Hiroko Sagisaka BT26-088 R TS [Start of Your Main Phase] If your opponent has a Digimon, gain 1 memory. [Your Turn] When any [Boss] or [TS] trait Digimon cards would be played, by suspending this Tamer, reduce the cost by 1. If you have no Digimon, instead reduce the cost by 2. --- [Security] Play this card without paying the cost.
Hiroko Sagisaka BT26-088 R TS [Start of Your Main Phase] If your opponent has a Digimon, gain 1 memory. [Your Turn] When any [Boss] or [TS] trait Digimon cards would be played, by suspending this Tamer, reduce the costs by 1. If you have no Digimon, instead reduce the costs by 2. --- [Security] Play this card without paying the cost.
鷺坂ヒロコ BT26-088 R TS 【自分のメインフェイズ開始時】相手のデジモンがいるなら、メモリー+1。 【自分のターン】特徴「バンチョー」/「TS」を持つデジモンカードが登場するとき、このテイマーをレストさせることで、支払うコスト-1。自分のデジモンがいないなら、代わりに支払うコスト-2。 --- 【セキュリティ】このカードをコストを支払わず登場させる。